3157 Switchback LED Turn Signal Bulbs, Amber and White, 4-Pack, 12V
Product Description
3157 Switchback LED Turn Signal Bulbs, Amber and White, 4-Pack, 12V
- Amber and White Switchback: In a compatible dual-function socket, the bulbs illuminate white for running or parking light use and flash amber with the turn signal.
- Bulb Cross-Reference: Fits listed 3157-style applications, including 3047, 3057, 3155, 3457 and 4057. Switchback operation requires a compatible dual-circuit socket.
- Four-Bulb 12V Pack: Includes four dual-color LED bulbs for compatible front turn signal and parking light positions on cars, trucks and SUVs.
- Installation Note: LEDs are polarity-sensitive. If a bulb does not illuminate, remove it and rotate the plug 180 degrees before reinstalling.
- Hyperflash Check: Some vehicles may require a load resistor or compatible flasher relay to prevent rapid flashing or a dashboard bulb warning.
Technical Specifications
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